Friction spring draft-rigging for railway-cars.



No. 862,910. PATENTED Ana-1s, 1907.

, J. J. HENNESSBY & P. N. MOORE.

FRICTION SPRING DRAFT RIGGING FOR RAILWAY CARS.

APPLICATION FILED APB. 25.1907.

2 sums-sum 1.

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No. 862,910. PATENTBD AUG. 13, 1907.

J, J. HENNESSBY & P-. N. MOORE. FRICTION SPRING DRAFT RIGGING FOR RAILWAYOARS.

APPI|IU ATIOH FILED APR. 25.1907.

2 SHEETS-SHEET 2.

', O I Mrng/S UNITED STATES PATENT OFFICE.

JOHN .T. HENNESSEY AND PETER N. MOORE, OF MILWAUKEE, WISCONSIN, ASSIGNORS OF ONE-HALF TO SAID HENNESSEY AND ONE-HALF TO WILLIAM H. MINER, OF'OHICAGO,

. ILLINOIS.

' Specification of Letters Patent.

Patented Aug. is, 1907.

Application filed April 25,1907. Serial No. 37 ),I 9O.

- To'all 'whom it may concern:

Be it known that we, J 0111 1 .I. HENNESSEY and PETER" N. Moons, citizens of, the United States, residing in Milwaukee, the county of Milwaukee and State of 5 Wisconsin, have invented a newand useful Improvement in Friction Spring Draft-Rigging'for Railwayspecification, Figure l is a side elevation, partly in vertical section, of a friction spring draft rigging embodying ourrinvention; "Fig.2 is a plan view, partly in ho ri.

gontal section; Fig. 3 is a vertical crosssection on line 33-bf Fig. 1. Fig.4 isla detail perspective view of one of the friction blocks. Fig. 5 is a detail perspective view of the other friction block, and Fig. 6 is a detail perspective view of the removable fil1er bloc'k-.

. In the drawing A A represent center sills or other longitudinal frame members of the car to which the draft rigging is applied, and Althe front or cross sill. Y

B is'the draW-bar'and' B the draw-bar extension, strap or yoke secured to'the' draw-bar in. the ilsual manner.

O C are iront'and rear stops secured to the center sillsor other longitudinalframe members of the car.

' line with the draw bar and abutting at one end against the front follower E; and D is a transversely arranged spring abuttmg at one end against the upright side wall v f of the, longitudinally movable friction boxer shell F;

The rear end of the movable friction box or shell F may serve. as'therear follower and. engage the rear stops 0 under bufiihg strains and the rear .end of the draw bar strap B under pulling strains. i The friction box or shell F has an internal longitu- 40 dinal friction face f 1 parallelto the line of draft, and it may have integrally but preferably in a separate-piece a transverse friction face f preferably slightly wedging or inclined at a small angle to a line at right angles to the draw bar, and preferably formed by a readily re movable filler block f F, placed in the rear end of the friction box of shell F. I

-G and G are slidingl friction blocks within the friction box or shell F. The friction block G is longitudinally movable with the draw bar; and is acted 'upon directly by the longitudinal'spring D, and is furnished.

with a recess 9 to receive the rear end of said spring D;

This longitudinally movable friction block Ghas-a longitudinally extending friction face g, in sliding frictionalengagement with'the longitudinally extending friction face f1 of the friction box or shell F.

The transversely movable friction block G has a transversely extending and preferably slightly wedging or inclined friction face 9 in sliding frictional engagement with the transversely extending friction face f of the filler block f 3 at the rear end of the friction box or shell F. And this transversely movable friction block G is furnished with a recess or socket g to receivepne end of the transverse spring D. The friction blocks G G have inclined or wedging meeting faces 9 g in sliding frictional engagement with each other. The inclined or wedging meeting faces 9 g of the longitudinally and transversely movable friction blocks G G are preferably furnished with steps or offsets g g ,,so that these inclined or wedging meetingfaces are sectional, or extend. in part in two different planes parallel to each other, instead of extending continuously in one plane. The angle of the meeting faces g g is preferably about 60, so as to give a greater transverse frictional sliding movement to the block G than longitudinal'movemerit to' the block G, as'the longitudinal movement of the block G, is, necessarily, limited to about the two and one-half inches permitted to the draw.- bar, although this angle may be varied as desired. The incline of the transverse friction face f 2 is preferably about as indicated in the drawing, al though this also may be varied as desired. By slightly I increasing the incline or wedging action of the trans- 30 D is a longitudinally arranged direct acting spring in vers-frictionface f f the resisting power of the'draft rigging as a whole maybe increased to any extent desired or required. As each of the friction blocks is directly acteduponby one of the springs in the direction of its movement, the draft rigging, though exerting a powerfill frictional resistance, will always act smoothly, uni form'ly, certainly and regularly, both in compressing and releasing, and without tendency to sticking .or to violent recoil.

H is the tie plate, having a longitudinal channel or .guide him the lower member of the draw bar strap or g yoke B, and by which the draft rigging is supported. The inner upright faces of the center sills A A may serve as guides or check plates to guide the longitudinally movable friction box or shell F, in-cases where metal center sill are employed, as illustrated in the drawing, or where side plates or stop castings furnished with integral front and rear stops are not employed.

We claim:: 1. In a frlction spring draft rigging. the combination with the draw bar and draw bar strap or yoke, front and rear stops and a follower, of a longitudinally movable tlon tacennd an interior transverse friction face, :1 Iongftudlnally movable. friction block having a longitudinal friction box or shell, having an interior longitudinal frici'riction face in sliding frictional engagement with the longitudinal friction face of said box or shell, a trans said transverse friction face on said box or shell, a longitudinally arranged spring acting against said longitudi nally'movable blocl and a transversely arranged spring acting against said transversely movable block, substantially as specified.

2. In a friction spring draft rigging, the combination with the draw bar and draw bar strap or yoke, front and rear stops and a follower. of a' longitudinally movable friction box or shell, having an interior longitudinal friction face and an interior transverse friction face, a longitudinally movable friction block having a longitudinal friction face in sliding frictional engagement with the longitudinal friction face of said-box or shell, a transversely movablc friction block having a transversely extending friction face in sliding frictional engagcment'with said transverse friction face on said box or shell, a longitudinally arranged spring acting against said longitudinally movable block, and a transversely arranged spring acting against said transversely movable block, said fric tion blocks having inclined meeting faces in sliding frictional engagement ,with each other, substantially as specified.

3. In a friction spring draft rigging, the combination with the draw bar, draw bar yoke and steps, of a follower,

a longitudinally movable friction box having internal longiludinal'and transverse friction faces, longitudinally and transversely movable friction blocks having inclined meeting faces. one-having a longitudinal friction face and the other a transverse friction face, a longiti ldinal spring bearing against the longitudinally movable block, and a transverse spring bearing against the transversely movable bloclt, substantially as specified.

4. In a friction spring draft rigging, the combination avith the draw bar, draw bar yoke and stops, of a follower, a longitudinally movable fr t'on box having internal longitudinal and transverse friction faces, longitudinally and transversely movable friction blocks having inclined meeting faces, one having a longitudinal friction face and the other a transverse friction face, a longitudinal spring bearing against the longitudinally mov'able block, and a transverse spring bearing against the transversely movable block, .the inclined meeting faces of said friction blocks having steps or offsets. substantiallyas specified.

5. :ln afriction spring draft rigging, the combination with the draw bar, draw bar yoke and stops, of a follower, a longitudinally movable friction box having internal longitudinal and transverse friction faces, longitudinally and transversely movable friction blocks having inclined meeting faces, one having a longitudinal friction face and the other 'a transverse frictionface, a' longitn'dinal spring bearing against the longitudinally movable block, and a transverse spring bearing against the transversely movable block, the transversely extending friction face of said box heing'inclined or wedging, substantially as specified 6. In a friction spring draft rigging, the combination with a movable friction box having longitudinal and transverse friction faces, of a plurality of friction blocks within said friction box in sliding frictional engagement there with. and springs, one bearing directly against each of .said friction blocks, substantially as specified.

face of said friction box being slightly inclined or wedging, substantially as specified.

8. In a friction spring draft rigging, the combination with a movable friction box having longitudinal and transverse friction faces, of a plurality of friction blockslwithin said friction box in sliding frictional engagement therewith, and springsone bearing directly against each of said friction blocks, said friction blocks having stepped or offset inclined meeting faces, substantially as specified.

9. ln'a friction spring draft rigging, the combination with a longitudinally movablefriction shell having a longitudinal and .a transverse friction face, of a longitudinally movable friction block, a transversely movable friction block and a transverse-spring bearing against said transve'rsely movable friction block, substantially as specified.

10. In a friction spring draft rigging, the combination with a longitudinally movable friction shell having a longitudinal and a transverse friction face, of a longitudinally movable friction block, a transversely movable friction block and a transverse spring bearing against said transversely movable friction blockfche transverse friction face of' said box being inclined or -wedging, substantially a specified.

11. In a friction spring draft rigging, the combination with a longitudinally movable friction shell having a longitudinal and a transverse friction face, of a longitudinally movable friction block, a transversely movable'friction block and a transverse spring bearing against said transversely movable friction block, the transverse friction face of said box being inclined or wedging and on a removable filler block, substantially as specified.

12. In a friction spring draft rigging, the combination with the draw bar, draw bar yoke and'stops, of afollower, a longitudinally movable friction box-having internal longitudinal and transverse friction faces, and longitudinally and transversely movable friction blocks having inclined meeting faces, one having a longitudinal friction face and the other a transverse friction face, a longitudinal spring bearing against the longitudinally movable block, and a transverse spring hearing against the transversely movable block, the transversefriction face' of said box being slightly inclined and on a removable filler block, substantially as specified.

13. In a friction springdraft rigging, the combination with a longitudinally movable friction shell having longitudinally and transversely extending friction faces, of a longitudinally movable friction block having a longitudi nally extending friction face, a transversely movable friction block having a transversely extending friction face said friction blocks having meeting inclined friction faces and being furnished with recesses to receive springs, a longitudinal spring bearing against said longitudinal movable friction block, anda transverse-spring bearing against said transversely movable friction block, substantially as specified.

14. In a' friction spring draft rigging, the combination with a longitudinally movable friction shell having longitudinally and transversely extending 'friction faces, of a longitudinally movable friction block having a longitudinally extending friction face, a transversely movable friction block having a transversely extending friction face, said friction blocks having meeting inclined friction faces and being furnished with recesses to receive springs, a 1011- gitudinal spring bearing against said longitudinal movable friction block, and a transverse spring bearing against said transversely movable friction block, and a wedge faced filler'block within said friction box, substantially as specified.

15. In a iriction spring draft rigging, the combination with a longitudinally movable friction'shell having longitudinally and transversely extending friction faces, of a longitudinally movable friction block having a longitudinally extendingfriction face, a transversely movable fr c tion. block having a transversely extending friction face, said friction blocks having meeting inclined friction faces and being furnished with recesses to receive springs, a longitudinalpspring bearing against said longitudinal movable friction block, and a transverse spring bearing against said transversely movable friction block, the inclined meeting faces of said friction blocks being stepped or offset, substantially as specified.

JOHN J. HENNESSEY. PETER N. MOORE.

Witnesses:

JAB. E. MEHAN, CHAnLns F. SeHnL'rz. 

